I have a base model 5spd 2008 Honda Fit. At 90000 miles and i'm planning on keeping it til the tires fall off.
I'm currently station in Germany and driving on the autobahn a lot to travel, most of the time i'm cruising at 80 mph, anything faster than that the wind noise just become unbearable.

My car currently spitting out P0339 code and idle rough when it is cold so i'm doing the following.

1.Changing all 4 spark plugs and all 4 coils pack
2. Changing the brake pads
3. changing oil, filter and transmission oil


My questions are :
Will automatic transmission fluid work or should i order manual transmission fluid ? What else should i do before my car hit 100k mark ? Seeing that i will be cruising at high speed on road trips, are there any special things that i should be doing ? I would hate to have my car breakdown on me on a long road trip.

 

You need to use manual tranny fluid (MTF); either Honda's or an aftermarket brand. Mine is an auto, so I've never needed to research which brand is better, but I bet there's info on that on this forum someplace.